Home / 53,280.11-79,920.13-15,840.02

Finding the Fourth Proportional to 53,280.11, 79,920.13 and 15,840.02

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Solution

The fourth proportional to 53,280.11, 79,920.13 and 15,840.02 is: 23,760.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,280.11 : 79,920.13 = 15,840.02 : x
  2. Step 2: Convert to fraction form
    53,280.11/79,920.13 = 15,840.02/x
  3. Step 3: Cross multiply
    53,280.11x = 79,920.13 × 15,840.02
  4. Step 4: Simplify right side
    53,280.11x = 1,265,936,457.60
  5. Step 5: Solve for x
    x = 1,265,936,457.60/53,280.11
  6. Step 6: Final answer
    x = 23,760.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.